Does your prompt give the same answer every time?

Run any prompt multiple times and instantly catch output drift before it breaks your automation or ships inconsistent responses.

~30 seconds. No setup required.

How it works

Step 1

The exact prompt you send to your AI — system prompt, user message, or both.

Step 2

Same prompt, multiple LLM calls, zero caching. Real-world variance.

Step 3

Side-by-side diff, reliability score, and a shipping recommendation.

Live example

See a Real Drift Example

The prompt looked fine. The outputs weren't.

Prompt

Extract customer support ticket data as JSON

Reliability64%

Run 1

application/json

1 {
2   "intent": "refund_request",
3-  "confidence": 0.92,
4-  "customer_id": "u_8421",
5-  "tier": "pro"
6 }

Run 2

application/json

1 {
2   "intent": "refund_request",
3+  "confidence": 0.74,
4+  "customer": {
5+    "id": "u_8421"
6+  },
7+  "notes": "see thread"
8 }

Safe for human review. Risky for production automation.

Human review: OKAutomation: Blocked

Small output changes can silently break parsers, workflows, agents, and automations.